Wiki articles in category Tutorials

The nested set behaviour is an approach to store hierarchical data in relational databases. For example, if we have many categories for our product or items. One category can be a "parent" for other categories, means that one category consists of more than one category. The model can be drawn using a "tree" model. There are other approaches available but what we will learn in this article is speci...

When you are handling so many projects and those projects are saved in different repository locations, you may find it very difficult to keep track all the versions and revisions manually and it will be much harder if you are developing in multiple repository branches.

namespace app\components;

Bootstrap tabs gets unselected/inactive when user navigates to other page and comes back. How to make bootstrap tabs remain active/selected after navigating to different web pages.

common\components\LanguageSelector.php

<?php
namespace common\components;

The scenario in which this wiki can be useful is when you have to send an (huge) array of model ids and perform a time consuming computation with it like linking every model to other models. The idea is to split the array into smaller arrays and perform sequential ajax requests, showing the calculation progress using a [Bootstrap Progress bar](https://www.yiiframework.com/extension/yiisoft/yii2-bo...

Hi Friends,

Note the tag {{homeUrl}} will be dynamically replaced at runtime.

To generate excel by query content, and download through any controller. You also can bind cssClass to header/odd/even rows. As for header, you even can set cssClass for each column.

$this->export2excel($excel_content,$excel_file);

in your controller.

So you want to use a fork of any existing vendor extension with your Yii 2 install and use the fork, instead of original source. This does not need you to push any update or register your package on packagist.org. You are recommended to follow the approach below:

Personalmente trovo che la versione "portable" sia molto più semplice da aggiornare, ed io tengo sempre costantemente aggiornato TUTTO il parco software relativo al mio webserver.

This tutorial shows you how to safely remove records between relationships.

1. create file common\components\languageSwitcher.php

Working with scenarios, with models that can receive many modifications in their rules or structures as development evolves, can create disruptions in the rescue process.

• Running a composer update does not fetch any new packages (even though the source is updated)
• A specific vendor package never gets updated
• Facing on and off problems when fetching packages while performing composer update.
• You ran a composer update earlier, but it was partially done, before you lost network connectivity, and you cannot refresh packages anymore.

This tutorial need extension mdmsoft/yii2-upload-file. Follow the intruction to install. After installation done, create controller and action

Assume we have many categories and many posts.

It's well known that there are Lazy Loading approach and Eager Loading approach in the relational query. But it's very important to know how the Eager Loading approach works in Yii 2. It has changed drastically from that of Yii 1.1, and there are common misunderstandings about it in the community.

To use jui auto complete widget first add